[Prev][Next][Index][Thread]
Re: Secondary Construction
-
To: tesla-at-grendel.objinc-dot-com
-
Subject: Re: Secondary Construction
-
From: "Malcolm Watts" <MALCOLM-at-directorate.wnp.ac.nz>
-
Date: Thu, 5 Oct 1995 09:31:34 +1200
-
>Received: from ns-1.csn-dot-net (root-at-ns-1.csn-dot-net [199.117.27.21]) by uucp-1.csn-dot-net (8.6.12/8.6.12) with SMTP id OAA09332 for <tesla-at-grendel.objinc-dot-com>; Wed, 4 Oct 1995 14:33:08 -0600
Hi Stan...
> > >
MW> > Point taken, but...
MW> > Can anyone explain why sparks would prefer to travel down the
MW> >inside of the former (winding) rather than the outside ?
> >
SH> thppppppth! Oh, sorry, had to dust off some neurons. I'd guess
SH> that the magnetic flux density tends to be greater inside the
SH> secondary, and without the added dielectric of the end caps, arc
SH> form more easily.
Thanks for the reply. I am of course aware of the behaviour of
plasmas in magnetic fields (a la Tokamaks, solar prominences, auroras
etc.). The reason I ask is because there is a well known photograph
of one of the MASTER's large coils (in a building) clearly throwing
sparks twice its height, yet without a plastic former, no sparks in-
ternally. The coil is clearly effectively suspended in air.
Malcolm